import type { JsonWebKey } from 'crypto';
import type { IAgoraRTCClient, ICameraVideoTrack, IMicrophoneAudioTrack, IAgoraRTCRemoteUser } from 'agora-rtc-sdk-ng';
import { z } from 'zod';


export type Language = 'en' | 'ar';
export type VideoQuality = 'low' | 'medium' | 'high';
export type AppTheme = 'light' | 'dark' | 'theme-neon-nights' | 'theme-desert-oasis' | 'theme-kyoto-garden';


export interface UserProfile {
    uid: string;
    displayName: string;
    photoURL: string;
    publicId: string;
    bio?: string;
    status?: string;
    publicKey?: JsonWebKey;
    blockedUsers?: { [uid: string]: true };
    blockedBy?: { [uid: string]: true };
    fcmToken?: string;
    privacySettings?: PrivacySettings;
}

export interface User extends UserProfile {
    isOnline?: boolean;
    lastSeen?: number | object;
}

export interface ChatRecipient extends User {
    isGroup?: boolean;
    isBot?: boolean;
}

export interface Contact {
    uid: string;
    name: string;
    addedAt: number;
    photoURL?: string;
    publicId: string;
    publicKey?: JsonWebKey;
    isOnline?: boolean;
}

export type GroupType = 'general' | 'study' | 'friends' | 'gaming';

export type GroupSendingMode = 'everyone' | 'admins' | 'owner';

export interface Group {
    id: string;
    info: {
        name: string;
        photoURL: string;
        createdBy: string;
        createdAt: number;
        description?: string;
        type: GroupType;
        settings?: {
            sendingMode?: GroupSendingMode;
        };
        mutedMembers?: { [uid: string]: true };
    };
    members: { [uid: string]: true };
    admins: { [uid: string]: true };
    encryptedKeys: { [uid: string]: string };
    keyLastRotatedAt?: number;
}

export interface GroupMember extends User {
    isAdmin: boolean;
    isMuted?: boolean;
}

export interface GroupInvitation {
    groupId: string;
    groupName: string;
    groupPhotoURL: string;
    invitedBy: string;
}

export interface ChatRequest {
    fromUid: string;
    displayName: string;
    photoURL: string;
    publicId: string;
    timestamp: number;
}

export interface ReplyTo {
    id: string;
    text: string;
    displayName: string;
    imageKey?: string;
    videoKey?: string;
    audioKey?: string;
}

export interface URLPreviewData {
    url: string;
    title: string;
    description?: string;
    imageUrl?: string;
    domain: string;
}

export interface EncryptedMessage {
    iv: number[];
    ciphertext: number[];
}

export interface ActionPayload {
    type: string;
}


export interface Message {
    id: string; 
    text?: string | null;
    encryptedText?: string | null;
    compressedText?: string; // For ultra saving mode
    originalSize?: number; // Size before compression
    compressedSize?: number; // Size after compression
    timestamp: number;
    editedAt?: number;
    reactions?: { [key: string]: { [uid: string]: { displayName: string } } };
    audioKey?: string;
    audioDuration?: number;
    transcription?: string;
    imageKey?: string;
    videoKey?: string;
    fileKey?: string;
    fileName?: string;
    fileSize?: number;
    fileType?: string;
    encryptionKey?: { [uid: string]: string } | { group: string }; // Key to decrypt media files, per user OR for group
    keyVersion?: number; // Timestamp of the group key used for this message
    urlPreviewData?: URLPreviewData;
    isDeleted?: boolean;
    isSystemMessage?: boolean;
    status?: 'sent' | 'pending' | 'failed';
    uploadProgress?: number; // For optimistic UI on uploads
    replyTo?: ReplyTo | null;
    sender: string;
    senderDisplayName: string;
    senderPhotoUrl: string;
    isSender?: boolean;
    deliveredTo?: { [uid: string]: number };
    readBy?: { [uid:string]: number };
    detectedLang?: string;
    action?: ActionPayload;
}

export interface ChatInfo {
    type: 'private' | 'group' | 'public';
    participants: { [uid: string]: true | { lastRead: number } };
    status?: 'accepted' | 'blocked';
    initiator?: string; 
}

export interface Reaction {
    emoji: string;
    users: string[];
}

export type DataMode = 'normal' | 'ultra';

export type FontStyle = 'default' | 'casual';

export interface AIUser {
  id:string;
  name: string;
  avatarUrl: string;
}

export enum PostCategory {
    Funny = 'funny',
    Sad = 'sad',
    Deep = 'deep',
    Angry = 'angry',
    Inspirational = 'inspirational',
    General = 'general'
}


export interface LiveReaction {
    id: string;
    emoji: string;
}

export interface AIComment {
  id: string;
  author: AIUser;
  text: string;
  reactions: { [key: string]: number };
  uiState: {
    userReaction: string | null;
    liveReactions: LiveReaction[];
  };
}

export interface AIPost {
  id: string;
  author: AIUser;
  content: string;
  imageUrl: string;
  imageQuery: string;
  isMeme: boolean;
  reactions: { [key: string]: number };
  comments: AIComment[];
  createdAt: string;
  category: PostCategory;
}

export type PostWithUIState = AIPost & {
    uiState: {
      userReaction: string | null; // e.g., 'heart', 'laugh', null
      showCommentInput: boolean;
      isGeneratingComment: boolean;
      hasGeneratedBulkComments: boolean;
      liveReactions: LiveReaction[];
    };
  };

// For Group Chat
export interface Persona {
  name: string;
  avatarUrl: string;
}
export interface GroupChatMessage {
  personaName: string;
  message: string;
}


export interface PrivacySettings {
    showOnline: boolean;
    showTyping: boolean;
    readReceipts: boolean;
    whoCanAdd: 'everyone' | 'contacts';
    whoCanViewProfile: 'everyone' | 'contacts';
}

// --- WebRTC Call Types ---
export type CallType = 'audio' | 'video';

export interface CallState {
    status: 'idle' | 'outgoing' | 'incoming' | 'connected' | 'connecting';
    peer: UserProfile | null;
    type: CallType | null;
    channelName: string | null;
    isMuted: boolean;
    isVideoOff: boolean;
    startTime: number | null;
}

export interface CallSignal {
    offer?: boolean;
    answer?: boolean;
    caller?: UserProfile;
    type?: CallType;
    channelName?: string;
    iceCandidate?: any;
    connected?: boolean;
    ended?: boolean;
    rejected?: boolean;
}

export interface PresenceStatus {
    isOnline: boolean;
    lastSeen: number;
    isBusy?: boolean;
}

// AI Schemas for Genkit
export const GenerateImageInputSchema = z.object({
    prompt: z.string().describe('A descriptive prompt for the image generation model.'),
});
export type GenerateImageInput = z.infer<typeof GenerateImageInputSchema>;

export const GenerateImageOutputSchema = z.object({
    imageUrl: z.string().describe('The data URI of the generated image.'),
});
export type GenerateImageOutput = z.infer<typeof GenerateImageOutputSchema>;

export interface LocalAiAction {
    type: string;
    keywords: {
        en: string[];
        ar: string[];
    };
    response: {
        en: string;
        ar: string;
    };
}

export const MessageSchema = z.object({
  role: z.enum(['user', 'model']),
  content: z.array(z.object({ text: z.string() })),
});

export type Message = z.infer<typeof MessageSchema>;